There is no simple way.
You cannot go by the name - which can refer to the number of faces. You can have different shapes with the same number of faces. The following are all examples of a hexahedron (six faces): triangular dipyramid (9 edges), pentagonal prism (10 edges), rectangular prism (12 edges).
One contributor has suggested it might be easier to count the faces and vertices (corners). Add the two numbers and then subtract 2. *This will work if the shape has been simplified as much as it can be. The 2 is only valid if there are no holes in the shape.
For example, a pentagonal prism: 6 faces, 6 vertices. Sum = 12. Subtract 2 = 10. A pentagonal pyramid has 10 edges.
It means that the shape or a given figure has three or more edges meeting
A pentagonal prism has 15 edges
Spherical
Triangular prism
A cylinder.
Cube or cuboid (3D figure) - 12 edges Dodecagon Deodeca (2D figure) Octahedron - (3D figure) - 8 faces 12 edges 6 vertices cube, rectangular, prism, pyramid
The Answer Is Cuboid For A 3D Figure Or A Dodecagon For 2D Figure. * * * * * Or it could be a hexagonal pyramid. Or a rectangular dipyramid.
A 3D shape that has 6 edges is called a hexagonal prism.
It means that the shape or a given figure has three or more edges meeting
corners of a 3d shape
A pentagonal prism has 15 edges
A cube
A cube
A circle
triangular prism
Sphere
Spherical